375 lines
10 KiB
C
375 lines
10 KiB
C
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// SPDX-License-Identifier: GPL-2.0+
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//
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// max77693.c - mfd core driver for the MAX 77693
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//
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// Copyright (C) 2012 Samsung Electronics
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// SangYoung Son <hello.son@samsung.com>
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//
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// This program is not provided / owned by Maxim Integrated Products.
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//
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// This driver is based on max8997.c
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/i2c.h>
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#include <linux/err.h>
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#include <linux/interrupt.h>
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#include <linux/of.h>
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#include <linux/pm_runtime.h>
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#include <linux/mutex.h>
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#include <linux/mfd/core.h>
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#include <linux/mfd/max77693.h>
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#include <linux/mfd/max77693-common.h>
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#include <linux/mfd/max77693-private.h>
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#include <linux/regulator/machine.h>
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#include <linux/regmap.h>
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#define I2C_ADDR_PMIC (0xCC >> 1) /* Charger, Flash LED */
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#define I2C_ADDR_MUIC (0x4A >> 1)
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#define I2C_ADDR_HAPTIC (0x90 >> 1)
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static const struct mfd_cell max77693_devs[] = {
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{ .name = "max77693-pmic", },
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{
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.name = "max77693-charger",
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.of_compatible = "maxim,max77693-charger",
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},
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{
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.name = "max77693-muic",
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.of_compatible = "maxim,max77693-muic",
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},
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{
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.name = "max77693-haptic",
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.of_compatible = "maxim,max77693-haptic",
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},
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{
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.name = "max77693-led",
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.of_compatible = "maxim,max77693-led",
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},
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};
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static const struct regmap_config max77693_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = MAX77693_PMIC_REG_END,
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};
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static const struct regmap_irq max77693_led_irqs[] = {
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{ .mask = LED_IRQ_FLED2_OPEN, },
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{ .mask = LED_IRQ_FLED2_SHORT, },
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{ .mask = LED_IRQ_FLED1_OPEN, },
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{ .mask = LED_IRQ_FLED1_SHORT, },
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{ .mask = LED_IRQ_MAX_FLASH, },
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};
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static const struct regmap_irq_chip max77693_led_irq_chip = {
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.name = "max77693-led",
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.status_base = MAX77693_LED_REG_FLASH_INT,
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.mask_base = MAX77693_LED_REG_FLASH_INT_MASK,
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.mask_invert = false,
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.num_regs = 1,
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.irqs = max77693_led_irqs,
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.num_irqs = ARRAY_SIZE(max77693_led_irqs),
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};
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static const struct regmap_irq max77693_topsys_irqs[] = {
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{ .mask = TOPSYS_IRQ_T120C_INT, },
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{ .mask = TOPSYS_IRQ_T140C_INT, },
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{ .mask = TOPSYS_IRQ_LOWSYS_INT, },
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};
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static const struct regmap_irq_chip max77693_topsys_irq_chip = {
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.name = "max77693-topsys",
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.status_base = MAX77693_PMIC_REG_TOPSYS_INT,
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.mask_base = MAX77693_PMIC_REG_TOPSYS_INT_MASK,
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.mask_invert = false,
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.num_regs = 1,
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.irqs = max77693_topsys_irqs,
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.num_irqs = ARRAY_SIZE(max77693_topsys_irqs),
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};
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static const struct regmap_irq max77693_charger_irqs[] = {
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{ .mask = CHG_IRQ_BYP_I, },
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{ .mask = CHG_IRQ_THM_I, },
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{ .mask = CHG_IRQ_BAT_I, },
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{ .mask = CHG_IRQ_CHG_I, },
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{ .mask = CHG_IRQ_CHGIN_I, },
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};
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static const struct regmap_irq_chip max77693_charger_irq_chip = {
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.name = "max77693-charger",
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.status_base = MAX77693_CHG_REG_CHG_INT,
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.mask_base = MAX77693_CHG_REG_CHG_INT_MASK,
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.mask_invert = false,
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.num_regs = 1,
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.irqs = max77693_charger_irqs,
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.num_irqs = ARRAY_SIZE(max77693_charger_irqs),
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};
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static const struct regmap_config max77693_regmap_muic_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = MAX77693_MUIC_REG_END,
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};
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static const struct regmap_irq max77693_muic_irqs[] = {
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{ .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC, },
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{ .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC_LOW, },
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{ .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC_ERR, },
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{ .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC1K, },
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{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_CHGTYP, },
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{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_CHGDETREUN, },
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{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_DCDTMR, },
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{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_DXOVP, },
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{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_VBVOLT, },
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{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_VIDRM, },
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{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_EOC, },
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{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_CGMBC, },
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{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_OVP, },
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{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_MBCCHG_ERR, },
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{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_CHG_ENABLED, },
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{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_BAT_DET, },
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};
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static const struct regmap_irq_chip max77693_muic_irq_chip = {
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.name = "max77693-muic",
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.status_base = MAX77693_MUIC_REG_INT1,
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.mask_base = MAX77693_MUIC_REG_INTMASK1,
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.mask_invert = true,
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.num_regs = 3,
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.irqs = max77693_muic_irqs,
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.num_irqs = ARRAY_SIZE(max77693_muic_irqs),
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};
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static const struct regmap_config max77693_regmap_haptic_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = MAX77693_HAPTIC_REG_END,
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};
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static int max77693_i2c_probe(struct i2c_client *i2c,
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const struct i2c_device_id *id)
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{
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struct max77693_dev *max77693;
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unsigned int reg_data;
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int ret = 0;
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max77693 = devm_kzalloc(&i2c->dev,
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sizeof(struct max77693_dev), GFP_KERNEL);
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if (max77693 == NULL)
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return -ENOMEM;
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i2c_set_clientdata(i2c, max77693);
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max77693->dev = &i2c->dev;
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max77693->i2c = i2c;
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max77693->irq = i2c->irq;
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max77693->type = id->driver_data;
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max77693->regmap = devm_regmap_init_i2c(i2c, &max77693_regmap_config);
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if (IS_ERR(max77693->regmap)) {
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ret = PTR_ERR(max77693->regmap);
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dev_err(max77693->dev, "failed to allocate register map: %d\n",
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ret);
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return ret;
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}
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ret = regmap_read(max77693->regmap, MAX77693_PMIC_REG_PMIC_ID2,
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®_data);
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if (ret < 0) {
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dev_err(max77693->dev, "device not found on this channel\n");
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return ret;
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} else
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dev_info(max77693->dev, "device ID: 0x%x\n", reg_data);
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max77693->i2c_muic = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_MUIC);
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if (IS_ERR(max77693->i2c_muic)) {
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dev_err(max77693->dev, "Failed to allocate I2C device for MUIC\n");
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return PTR_ERR(max77693->i2c_muic);
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}
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i2c_set_clientdata(max77693->i2c_muic, max77693);
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max77693->i2c_haptic = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_HAPTIC);
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if (IS_ERR(max77693->i2c_haptic)) {
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dev_err(max77693->dev, "Failed to allocate I2C device for Haptic\n");
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ret = PTR_ERR(max77693->i2c_haptic);
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goto err_i2c_haptic;
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}
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i2c_set_clientdata(max77693->i2c_haptic, max77693);
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max77693->regmap_haptic = devm_regmap_init_i2c(max77693->i2c_haptic,
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&max77693_regmap_haptic_config);
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if (IS_ERR(max77693->regmap_haptic)) {
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ret = PTR_ERR(max77693->regmap_haptic);
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dev_err(max77693->dev,
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"failed to initialize haptic register map: %d\n", ret);
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goto err_regmap;
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}
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/*
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* Initialize register map for MUIC device because use regmap-muic
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* instance of MUIC device when irq of max77693 is initialized
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* before call max77693-muic probe() function.
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*/
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max77693->regmap_muic = devm_regmap_init_i2c(max77693->i2c_muic,
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&max77693_regmap_muic_config);
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if (IS_ERR(max77693->regmap_muic)) {
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ret = PTR_ERR(max77693->regmap_muic);
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dev_err(max77693->dev,
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"failed to allocate register map: %d\n", ret);
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goto err_regmap;
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}
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ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,
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IRQF_ONESHOT | IRQF_SHARED, 0,
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&max77693_led_irq_chip,
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&max77693->irq_data_led);
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if (ret) {
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dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
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goto err_regmap;
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}
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ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,
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IRQF_ONESHOT | IRQF_SHARED, 0,
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&max77693_topsys_irq_chip,
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&max77693->irq_data_topsys);
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if (ret) {
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dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
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goto err_irq_topsys;
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}
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ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,
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IRQF_ONESHOT | IRQF_SHARED, 0,
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&max77693_charger_irq_chip,
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&max77693->irq_data_chg);
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if (ret) {
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dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
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goto err_irq_charger;
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}
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ret = regmap_add_irq_chip(max77693->regmap_muic, max77693->irq,
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IRQF_ONESHOT | IRQF_SHARED, 0,
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&max77693_muic_irq_chip,
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&max77693->irq_data_muic);
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if (ret) {
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dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
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goto err_irq_muic;
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}
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/* Unmask interrupts from all blocks in interrupt source register */
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ret = regmap_update_bits(max77693->regmap,
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MAX77693_PMIC_REG_INTSRC_MASK,
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SRC_IRQ_ALL, (unsigned int)~SRC_IRQ_ALL);
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if (ret < 0) {
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dev_err(max77693->dev,
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"Could not unmask interrupts in INTSRC: %d\n",
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ret);
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goto err_intsrc;
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}
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pm_runtime_set_active(max77693->dev);
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ret = mfd_add_devices(max77693->dev, -1, max77693_devs,
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ARRAY_SIZE(max77693_devs), NULL, 0, NULL);
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if (ret < 0)
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goto err_mfd;
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return ret;
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err_mfd:
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mfd_remove_devices(max77693->dev);
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err_intsrc:
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regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic);
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err_irq_muic:
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regmap_del_irq_chip(max77693->irq, max77693->irq_data_chg);
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err_irq_charger:
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regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys);
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err_irq_topsys:
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regmap_del_irq_chip(max77693->irq, max77693->irq_data_led);
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err_regmap:
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i2c_unregister_device(max77693->i2c_haptic);
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err_i2c_haptic:
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i2c_unregister_device(max77693->i2c_muic);
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return ret;
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}
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static int max77693_i2c_remove(struct i2c_client *i2c)
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{
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struct max77693_dev *max77693 = i2c_get_clientdata(i2c);
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mfd_remove_devices(max77693->dev);
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regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic);
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regmap_del_irq_chip(max77693->irq, max77693->irq_data_chg);
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regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys);
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regmap_del_irq_chip(max77693->irq, max77693->irq_data_led);
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i2c_unregister_device(max77693->i2c_muic);
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i2c_unregister_device(max77693->i2c_haptic);
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return 0;
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}
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static const struct i2c_device_id max77693_i2c_id[] = {
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{ "max77693", TYPE_MAX77693 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, max77693_i2c_id);
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static int max77693_suspend(struct device *dev)
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{
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struct i2c_client *i2c = to_i2c_client(dev);
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struct max77693_dev *max77693 = i2c_get_clientdata(i2c);
|
||
|
|
|
||
|
|
if (device_may_wakeup(dev)) {
|
||
|
|
enable_irq_wake(max77693->irq);
|
||
|
|
disable_irq(max77693->irq);
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int max77693_resume(struct device *dev)
|
||
|
|
{
|
||
|
|
struct i2c_client *i2c = to_i2c_client(dev);
|
||
|
|
struct max77693_dev *max77693 = i2c_get_clientdata(i2c);
|
||
|
|
|
||
|
|
if (device_may_wakeup(dev)) {
|
||
|
|
disable_irq_wake(max77693->irq);
|
||
|
|
enable_irq(max77693->irq);
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct dev_pm_ops max77693_pm = {
|
||
|
|
.suspend = max77693_suspend,
|
||
|
|
.resume = max77693_resume,
|
||
|
|
};
|
||
|
|
|
||
|
|
#ifdef CONFIG_OF
|
||
|
|
static const struct of_device_id max77693_dt_match[] = {
|
||
|
|
{ .compatible = "maxim,max77693" },
|
||
|
|
{},
|
||
|
|
};
|
||
|
|
MODULE_DEVICE_TABLE(of, max77693_dt_match);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
static struct i2c_driver max77693_i2c_driver = {
|
||
|
|
.driver = {
|
||
|
|
.name = "max77693",
|
||
|
|
.pm = &max77693_pm,
|
||
|
|
.of_match_table = of_match_ptr(max77693_dt_match),
|
||
|
|
},
|
||
|
|
.probe = max77693_i2c_probe,
|
||
|
|
.remove = max77693_i2c_remove,
|
||
|
|
.id_table = max77693_i2c_id,
|
||
|
|
};
|
||
|
|
|
||
|
|
module_i2c_driver(max77693_i2c_driver);
|
||
|
|
|
||
|
|
MODULE_DESCRIPTION("MAXIM 77693 multi-function core driver");
|
||
|
|
MODULE_AUTHOR("SangYoung, Son <hello.son@samsung.com>");
|
||
|
|
MODULE_LICENSE("GPL");
|